104215537 has 4 divisors (see below), whose sum is σ = 105247476. Its totient is φ = 103183600.

The previous prime is 104215483. The next prime is 104215549. The reversal of 104215537 is 735512401.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 66650896 + 37564641 = 8164^2 + 6129^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104215537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104215577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 515818 + ... + 516019.

It is an arithmetic number, because the mean of its divisors is an integer number (26311869).

Almost surely, 2^104215537 is an apocalyptic number.

It is an amenable number.

104215537 is a deficient number, since it is larger than the sum of its proper divisors (1031939).

104215537 is a wasteful number, since it uses less digits than its factorization.

104215537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031938.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 104215537 is about 10208.6011284603. The cubic root of 104215537 is about 470.5915849274.

Adding to 104215537 its reverse (735512401), we get a palindrome (839727938).

The spelling of 104215537 in words is "one hundred four million, two hundred fifteen thousand, five hundred thirty-seven".